... sediments the undrained compressive strength, compressibility, friction angle, in-situ stress ratio and consolidation ratio could be correlated with either the plasticity index or the plastic or liquid limits. These correlations are well documented in the geotechnical literature and a number of them...

... is that the uniaxial compressive strength obtained in PFC is approximately 4 times greater than the tensile strength. This is dispropor- tionately low, compared to granite and most other rocks where the ratio of t/ ci is typically reported as 0.04 to 0.03 ( t/ ci = 1/24 to 1/30) [13].Diederichs [12] showed...

... reservoir geomechanics Simulation Upstream Oil & Gas Reservoir Characterization strength cohesion sandstone determination petrophysical property crack length porosity compressive strength Jackfork sandstone experimental determination hydraulic fracturing international society...

... unconfined compressive strength and many of the punch test parameters. They also show that sig- nificant correlations occur between Shore Hardness and these parameters. Based on this and on the similarity between the way in which rock samples fail in the punch test and rock fails beneath button and disk...

... on rock penetration within a velocity range of 10 to 20 ftlsec. Use of Schmidt Hammer for estimating unconfined compressive strength (UCS). The reliability of using UCS for production rate predictions. Production rate estimating procedures. This paper covers laboratory and field testing pertaining...

... mass modulus values to rock mass porosity values. Surface refraction seismic measurements are used to estimate rock mass low strain modulus values. Recovered rock core unconfined compressive strengths are used to estimate rock particle modulus values, and unit weights are used to estimate corresponding...

... explosives, the properties of rock that control the fracture process are relatively poorly known. In this study, a set of twelve rock types covering a wide range in mineralogy, texture and homogeneity were investigated for their compressive strength under high strain rate loading. The corresponding static...

... specimen absorption Reservoir Characterization Korea physical property granitic building stone compressive strength tensile strength Upstream Oil & Gas Shore Hardness rock property granitic rock mineral p-wave velocity granite Pacific Rocks 2000, Girard, Liebman, Breeds d Doe (eds) O...

... ratio low temperature material storage Oshima granite granite deformation compressive strength storage Pacific Rocks 2000, Girard, Liebman, Breeds B Doe (eds)O 2000 Balkema, Rotterdam, ISBN 90 5809 155 4 Behavior of rock mass around openings affected by thermal hysteresis due to low temperature...

... Oil & Gas CDE porosity compressive strength wellbore integrity longitudinal ultrasonic wave velocity stress rate mechanical property richter 1979 UNIAXIAL stress tensile strength stress-strain curve main stress uniaxial compressive Poisson ratio Pacific Rocks 2000, Girard, Liebman...

... drilling fluid formulation ultrafine cement grout hydraulic conductivity laboratory cementitious grout compressive strength excavation drilling fluid chemistry drilling fluid property drilling fluids and materials air transmissivity simultaneous wet pulverization optimization cement grout...

... ABSTRACT Roof beams are modeled with a cracked beam column finite element incorporating subcritical propagation of edge cracks and compressive strength deterioration by subcritical propagation of wing cracks. For limestone beams strength is reduced to 80% of short-term strength in 2 hours, 50...

... situations, and compared to laboratory test results, applied to scale effect on compressive strength. A new technique was used in order to generate and control cracks in the interior of cast specimens employing polyester film strips. It was thus possible to obtain specimens with crack lengths both constant...

... in which the strain rate varied under atmosphere, then the stress corrosion index of Oshima granite was determined to be 32. The values of stress corrosion index of other rocks is determined by John (1972), Sangha (1972), and Peng (1973) based on uniaxial compressive strength obtained from the same testing...

... in the form of new fracture surface energy. Crack-like defects increase as shock energy dissipated in rock material increases. Measurements following shock loading indicate that ultrasonic velocity in rock partially recovers with time. It appears that compressive strength is independent of shock-treatment...

... of machines for a desired excavation rate. The limitations of compressive strength as a sole determinator of cuttability are illustrated and the advantages of an instrumented cutting test which allows the cutting motor size and boom forces to be determined are given. The importance of providing adequate boom...

... Lac du Bonnet granite fracture zone 2 strength envelope compressive strength p-wave velocity reservoir geomechanics stress Domain III Reservoir Characterization MPa cohesion drilling-induced damage failure envelope stress concentration laboratory property underground research laboratory...

... is known and breakout dimensions are logged. Reservoir Characterization Herrick Zoback borehole breakout breakout dimension borehole wall reservoir geomechanics Alabama limestone horizontal stress episodic failure numerical model compressive strength principal stress breakout Upstream...